Section 01815 - Commissioning of Hvac
Commissioning of HVAC ME- Building Group
SECTION 01815 - COMMISSIONING OF HVAC
PART 1 GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of Contract, including General and Supplementary Conditions and other Division1 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section includes commissioning process requirements for HVAC&R systems, assemblies, and equipment.
1.3 DEFINITIONS
A. Commissioning Plan: Document that outlines organization, schedule, allocation of resources, and documentation requirements of commissioning process.
B. CxA: Commissioning Authority.
C. HVAC&R: Heating, Ventilating, Air Conditioning, and Refrigeration.
D. Systems, Subsystems, Equipment, and Components: Where these terms are used together or separately, they shall mean "as-built" systems, subsystems, equipment, and components.
1.4 CONTRACTOR'S RESPONSIBILITIES
A. Perform commissioning tests at direction of CxA.
B. Attend construction phase controls coordination meeting.
C. Attend testing, adjusting, and balancing review and coordination meeting.
D. Participate in HVAC&R systems, assemblies, equipment, and component maintenance orientation and inspection as directed by CxA.
E. Provide information requested by CxA for final commissioning documentation.
F. Provide measuring instruments and logging devices to record test data, and provide data acquisition equipment to record data for complete range of testing for required test period.
2.1 CxA'S RESPONSIBILITIES
A. Provide Project-specific construction pre-functional component and functional systems checklists and commissioning process test procedures for actual HVAC&R systems, assemblies, equipment, and components to be furnished and installed as part of construction contract.
B. Direct commissioning testing.
C. Verify testing, adjusting, and balancing of Work are complete.
D. Provide test data, inspection reports, and certificates in Systems Manual.
2.2 COMMISSIONING DOCUMENTATION
A. Provide following information to CxA for inclusion in commissioning plan:
1. Plan for delivery and review of submittals, systems manuals, and other documents and reports.
2. Identification of installed systems, assemblies, equipment, and components including design changes that occurred during construction phase.
3. Process and schedule for completing construction checklists and manufacturer's prestart and startup checklists for HVAC&R systems, assemblies, equipment, and components to be verified and tested.
4. Certificate of completion certifying that installation, prestart checks, and startup procedures have been completed.
5. Certificate of readiness certifying that HVAC&R systems, subsystems, equipment, and associated controls are ready for testing.
6. Test and inspection reports and certificates.
7. Corrective action documents.
8. Verification of testing, adjusting, and balancing reports.
2.3 SUBMITTALS
A. Certificates of readiness.
B. Certificates of completion of installation, prestart, and startup activities.
PART 3 PRODUCTS (Not Used)
PART 5 EXECUTION
5.1 TESTING PREPARATION
A. Certify that HVAC&R systems, subsystems, and equipment have been installed, calibrated, and started and are operating according to Contract Documents.
B. Certify that HVAC&R instrumentation and control systems have been completed and calibrated, that they are operating according to Contract Documents, and that pretest set points have been recorded.
C. Certify that testing, adjusting, and balancing procedures have been completed and that testing, adjusting, and balancing reports have been submitted, discrepancies corrected, and corrective work approved.
D. Set systems, subsystems, and equipment into operating mode to be tested (e.g., normal shutdown, normal auto position, normal manual position, unoccupied cycle, emergency power, and alarm conditions).
E. Inspect and verify position of each device and interlock identified on checklists.
F. Check safety cutouts, alarms, and interlocks with smoke control and life-safety systems during each mode of operation.
G. Testing Instrumentation: Install measuring instruments and logging devices to record test data as directed by CxA.
5.2 TESTING AND BALANCING VERIFICATION
A. Prior to performance of testing and balancing Work, provide copies of reports, sample forms, checklists, and certificates to CxA.
B. Notify CxA at least 10 days in advance of testing and balancing Work, and provide access for CxA to witness testing and balancing Work.
C. Provide technicians, instrumentation, and tools to verify testing and balancing of HVAC&R systems at direction of CxA.
1. CxA will notify testing and balancing Subcontractor 10 days in advance of date of field verification. Notice will not include data points to be verified.
2. Testing and balancing Subcontractor shall use same instruments (by model and serial number) that were used when original data were collected.
3. Failure of item includes, other than sound, deviation of more than 10 percent. Failure of more than 10 percent of selected items shall result in rejection of final testing, adjusting, and balancing report. For sound pressure readings, deviation of 3 dB shall result in rejection of final testing. Variations in background noise must be considered.
4. Remedy deficiency and notify CxA so verification of failed portions can be performed.
5.3 GENERAL TESTING REQUIREMENTS
A. Provide technicians, instrumentation, and tools to perform commissioning test at direction of CxA.
B. Scope of HVAC&R testing shall include entire HVAC&R installation, from central equipment for heat generation and refrigeration through distribution systems to each conditioned space. Testing shall include measuring capacities and effectiveness of operational and control functions.
C. Test all operating modes, interlocks, control responses, and responses to abnormal or emergency conditions, and verify proper response of building automation system controllers and sensors.
D. CxA along with HVAC&R Contractor, testing and balancing Subcontractor, and HVAC&R Instrumentation and Control Subcontractor shall prepare detailed testing plans, procedures, and checklists for HVAC&R systems, subsystems, and equipment.
E. Tests will be performed using design conditions whenever possible.
F. Simulated conditions may need to be imposed using artificial load when it is not practical to test under design conditions. Before simulating conditions, calibrate testing instruments. Provide equipment to simulate loads. Set simulated conditions as directed by CxA and document simulated conditions and methods of simulation. After tests, return settings to normal operating conditions.
G. CxA may direct that set points be altered when simulating conditions is not practical.
H. CxA may direct that sensor values be altered with signal generator when design or simulating conditions and altering set points are not practical.
I. If tests cannot be completed because of deficiency outside scope of HVAC&R system, document deficiency and report it to Owner. After deficiencies are resolved, reschedule tests.
J. If testing plan indicates specific seasonal testing, complete appropriate initial performance tests and documentation and schedule seasonal tests.
5.4 HVAC&R SYSTEMS, SUBSYSTEMS, AND EQUIPMENT TESTING PROCEDURES
A. Boiler Testing and Acceptance Procedures: Testing requirements are specified in Division15 boiler Sections. Provide submittals, test data, inspector record, and boiler certification to CxA.
B. HVAC&R Instrumentation and Control System Testing: Field testing plans and testing requirements are specified in Division15 Sections "HVAC Instrumentation and Controls" and "Sequence of Operation." Assist CxA with preparation of testing plans.
C. Pipe system cleaning, flushing, hydrostatic tests and chemical treatment requirements are specified in Division15 piping Sections. HVAC&R Contractor shall prepare pipe system cleaning, flushing, and hydrostatic testing plan. Provide cleaning, flushing, testing, and treating plan and final reports to CxA. Plan shall include following:
1. Sequence of testing and testing procedures for each section of pipe to be tested, identified by pipe zone or sector identification marker. Markers shall be keyed to Drawings for each pipe sector, showing physical location of each designated pipe test section. Drawings keyed to pipe zones or sectors shall be formatted to allow each section of piping to be physically located and identified when referred to in pipe system cleaning, flushing, hydrostatic testing, and chemical treatment plan.
2. Description of equipment for flushing operations.
3. Minimum flushing water velocity.
4. Tracking checklist for managing and ensuring that all pipe sections have been cleaned, flushed, hydrostatically tested, and chemically treated.
D. Energy Supply System Testing: Provide technicians, instrumentation, tools, and equipment to test performance of gas, steam and hot-water systems and equipment at direction of CxA. CxA shall determine sequence of testing and testing procedures for each equipment item and pipe section to be tested.
E. Refrigeration System Testing: Provide technicians, instrumentation, tools, and equipment to test performance of chillers, cooling towers, refrigerant compressors and condensers, heat pumps, and other refrigeration systems. CxA shall determine sequence of testing and testing procedures for each equipment item and pipe section to be tested.
F. HVAC&R Distribution System Testing: Provide technicians, instrumentation, tools, and equipment to test performance of air, steam, and hydronic distribution systems; special exhaust; and other distribution systems, including HVAC&R terminal equipment and unitary equipment.
G. Vibration and Sound Tests: Provide technicians, instrumentation, tools, and equipment to test performance of vibration isolation and seismic controls.
H. The heating ventilation air conditioning system for the Administration/Employee Services building consists of three package direct expansion refrigeration, gas fired heating, variable volume rooftop units and one package direct expansion refrigeration, gas fired heating, constant volume rooftop unit.
END OF SECTION 01815
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Revision Date: 06/08/2011 Project & Bid Package
File name:01815CommissioningOfHVAC.doc